Don't know that one.
I've never been a huge fan of Upsetter instrumentals, that said I'm more familiar with the early 70's organ stuff (which get pretty irritating after a while) than any later stuff.
The vocals were always much better (both early 70's and Black Ark).

Once More
this one makes my cold sweat brake out ... an absolute Upsetter rarity and killer vocal by Errol Dunkley from late '68 released on a blanc Amalgamated (and on a uk Island for that matter), you're already a very lucky guy (or doll) when you have got that one on tape alone !!

Never had a Dream (Glen Adams)
Glen is not a bad singer at all isn't he !

Johnny Dollar (probably Dave Barker)
right Tim, that's Bunnies so it might be (Jamaican!) James Brown with the Upsetters on a Big 9 single.